Folding knife



FIG. 1 is a front perspective view of a folding knife showing our new design, illustrated in an open position;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a front side elevational view thereof; and

FIG. 8 is a rear side elevational view thereof.

FIG. 9 is a front perspective view of the folding knife, illustrated in a closed position;

FIG. 10 is a rear perspective view thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a left side elevational view thereof;

FIG. 14 is a right side elevational view thereof;

FIG. 15 is a front side elevational view thereof; and,

FIG. 16 is a rear side elevational view thereof. 

The ornamental design for a folding knife, as shown and described. 